JP5095644B2 - Image measuring apparatus and computer program - Google Patents

Description

  The present invention relates to an image measurement device and a computer program that can display a measurement result in an easily viewable manner without depending on a state where a measurement object is placed.

  Conventionally, as a device for measuring the shape of a measurement object, the measurement object is irradiated with light, and the transmitted light or reflected light of the irradiated light is received by a light receiving lens, CCD (Charge Coupled Device), CMOS (Complementary Metal-Oxide Semiconductor) In many cases, an image measuring apparatus that acquires an image formed on an imaging element such as), and measures the shape of a measurement object by computing the acquired image using a computer has been developed.

  The image of the measurement object is very accurately similar to the measurement object by the light receiving lens. By calibrating the dimensions on the image with the magnification of the light receiving lens, the dimensions of the actual measurement object can be measured based on the dimensions on the image. Therefore, by accurately specifying the shape of the measurement object on the image, the shape of the actual measurement object can be accurately measured. The shape of the measurement object on the image is specified by detecting a boundary part (hereinafter referred to as an edge part) between the measurement object and the background image. FIG. 17 is a view showing an example of an edge detection area designated on a conventional image. FIG. 18 is a view showing an example of a shape specified by a least square method based on a conventional edge point. FIG. 19 is a schematic diagram for explaining a circle obtained by fitting a conventional edge point to a geometric figure.

  When an edge is detected on an image, as shown in FIG. 17, an edge detection area is designated by surrounding the edge portion with a pointing device such as a mouse by clicking or dragging. The edge portion is a portion where the luminance value changes sharply between the pixel of the measurement object and the pixel of the background image, and the computer determines that the luminance difference between adjacent pixels is a predetermined value in the image data of the specified area, for example. Larger locations (between pixels) are acquired as a plurality of edge points as shown in FIG. The acquired plurality of edge points are fitted to a geometric figure such as a straight line as shown in FIG. 18 by a regression analysis method such as a least square method, and for example, the fitted straight line is detected as an edge. Even if the straight line is a point, it can be detected in the same manner, and the circular shape is also obtained as a plurality of edge points as shown in FIG. Fitting to a geometric figure by a square method or the like, for example, a fitted circle can be detected as an edge.

  The size of the measurement object itself and the size of the measurement target part are various. Therefore, when a measurement object having a size that can be held in a hand (a size of about several mm to 100 mm square) is measured by a measuring device having a field of view of only a few mm square, measurement is performed. The whole picture of the object cannot be grasped collectively. In this case, for example, the measurement object is moved relative to the field of view by moving the XY stage or the like disclosed in Patent Document 1, and measurement is performed after moving a necessary portion into the field of view. .

  For example, when measuring the distance between two straight lines that do not fit within the same field of view, first one straight edge is designated, and the XY stage is moved to designate the other straight edge. The distance between the designated straight edges is calculated and measured from the position in the display image and the movement amount of the XY stage.

  In the image measurement device, it is difficult to grasp which measurement value of which part of the measurement target is the measured measurement result. Therefore, conventionally, for example, as shown in Patent Document 1, while displaying an image of a measurement object on a display screen, by displaying a dimension line corresponding to a measurement location designated for measuring a geometric dimension, The user can easily confirm which geometric dimension measurement result is displayed.

Japanese Patent Laid-Open No. 11-132740

  In the conventional image measurement apparatus including the above-described Patent Document 1, when the measurement object is within the field of view, the user can easily grasp which measurement value of which part of the measurement object is the measurement result. can do. However, if the measurement object does not fit in the field of view, the entire image of the measurement object cannot be displayed, and the measurement result is obtained by measuring which part of the measurement object and how it is measured. There is a problem that it is difficult for the user to intuitively grasp the measurement target part.

  For example, there is an apparatus that displays a detected edge portion on a screen different from the measurement target and displays a dimension line and a measurement result on another screen. However, there is no change in that the entire image of the measurement object cannot be displayed. If the shape of the measurement object is complex, the measurement result eventually measures which part of the measurement object. The fact that it is difficult to grasp whether it is a measured value remains unchanged.

  The present invention has been made in view of such circumstances, the user can accurately grasp which part of the measurement object the measurement result is, the posture of the image of the measurement object, An object of the present invention is to provide an image measurement device and a computer program that allow a user to visually confirm which part of a measurement object the measurement result is independent of the position or the like.

  In order to achieve the above object, the image measuring apparatus according to the first aspect of the present invention is an image measuring apparatus in which imaging means for acquiring an image of a measuring object is arranged opposite to a stage on which the measuring object is placed. On the displayed image, a display unit that displays the image of the measurement object acquired by the imaging unit, a feature image designation receiving stage that accepts designation as an arbitrary partial image on the displayed image, A measurement position designation accepting unit that accepts designation of a measurement position of a measurement object, a feature image that has been designated by the feature image designation acceptance unit, a measurement position that has been designated by the measurement position designation acceptance unit, and the measurement position A relative position storage means for storing information relating to a relative position with respect to the feature image, which represents a display position for displaying the indicated dimension line, and a measurement object newly acquired by the imaging means A posture / position specifying means for comparing the image of the image and the stored feature image and specifying information on the posture and position of the image of the newly acquired measurement object, and the feature image stored in the relative position storage means Based on the information on the relative position of the measurement position with respect to the image, the edge position detection means for setting the measurement position for the image of the measurement object whose posture and position are specified and detecting the edge portion of the measurement position, and A measurement unit that measures a predetermined physical quantity based on an edge portion, a dimension line that indicates a measurement position based on information on a relative position with respect to a feature image that represents a display position of the dimension line stored in the relative position storage unit, and And a measurement result display means for displaying the measurement result at a predetermined position.

  Further, in the image measurement apparatus according to the second invention, in the first invention, the relative position storage means stores a display position for displaying the measurement result as information relating to a relative position with respect to the feature image, The measurement result display means displays the measurement result at a predetermined position based on information on the relative position of the display position for displaying the measurement result with respect to the feature image stored in the relative position storage means. It is characterized by.

  An image measuring apparatus according to a third aspect of the invention is characterized in that, in the first or second aspect of the invention, there is provided display position changing means for receiving a change in position for displaying the dimension line and / or the measurement result.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the image measurement apparatus receives a designation of the measurement result that is a target for determining whether or not it is within a predetermined tolerance range. It is characterized by comprising specification receiving means and display mode changing means for changing the display mode of the measurement result received by the measurement result specification receiving means.

  The image measurement apparatus according to a fifth aspect of the present invention is the image measurement device according to the fourth aspect, further comprising measurement result determination means for determining whether or not the measurement result accepted by the measurement result designation acceptance means is within a predetermined tolerance range. The display mode changing unit changes the display mode of the measurement result when the measurement result determining unit determines that the measurement result is within a predetermined tolerance range.

  The image measurement device according to a sixth aspect of the present invention is the display state for determining whether or not there is a portion where the measurement result is displayed outside the display range in any one of the first to fifth aspects. When the measurement result display means determines that there is a portion displayed outside the display range by the display state determination means, the display position of the measurement result is moved into the display range and displayed. It is made to do so.

  The image measurement apparatus according to a seventh aspect of the present invention is the image measurement apparatus according to any one of the first to sixth aspects, wherein the display angle detection unit detects the inclination angle of the display position of the measurement result, and the detected inclination angle is a predetermined angle. An inclination angle determining means for determining whether or not the above is satisfied, and the measurement result display means inverts the measurement result upside down when the inclination angle determining means determines that the inclination angle is equal to or greater than a predetermined angle. It is characterized by being displayed.

  An image measuring apparatus according to an eighth aspect of the present invention is the first aspect of the present invention, wherein the information regarding the relative position with respect to the image of the measurement object representing the dimension line indicating the displayed measurement position and the display position of the measurement result is displayed on the measurement object. Measurement result display position storage means for storing the image in association with the posture and position of the image, the measurement result display means represents the dimension line and the measurement result display position stored in the measurement result display position storage means, Based on the information on the relative position of the measurement object relative to the image, the information on the attitude and position of the image of the measurement object specified by the attitude / position specifying means is changed and displayed.

  Next, in order to achieve the above object, a computer program according to a ninth aspect of the present invention is an image measurement apparatus in which an imaging means for acquiring an image of a measurement object is arranged facing a stage on which the measurement object is placed. In the computer program that can be executed, the image measurement device is designated as display means for displaying an image of the measurement object acquired by the imaging means, and an arbitrary partial image on the displayed image is designated as a feature image. A feature image designation accepting step for accepting a measurement, a measurement position designation accepting unit for accepting designation of a measurement position of a measurement object on the displayed image, a feature image for which designation is accepted by the feature image designation accepting unit, and the measurement position designation Information relating to the relative position with respect to the feature image, which indicates the measurement position for which the designation is accepted and the display position for displaying the dimension line indicating the measurement position Relative position storage means for storing the information, the image of the measurement object newly acquired by the imaging means is collated with the stored feature image, and information on the posture and position of the image of the measurement object newly acquired is obtained. Based on information on the relative position of the measurement position relative to the feature image stored in the posture / position specifying means and the relative position storage means, the measurement position is set for the image of the measurement object whose posture and position are specified. An edge portion detection means for detecting an edge portion of the measurement position, a measurement means for measuring a predetermined physical quantity based on the detected edge portion, and a display position of the dimension line stored in the relative position storage means. Based on the information on the relative position with respect to the feature image, function as a measurement result display means for displaying the dimension line indicating the measurement position and the measurement result at a predetermined position. And features.

  The computer program according to a tenth aspect of the invention is the computer program according to the ninth aspect, wherein the relative position storage means functions as means for storing a display position for displaying the measurement result as information relating to a relative position with respect to the feature image. Causing the result display means to function as means for displaying the measurement result at a predetermined position based on information on a relative position of a display position for displaying the measurement result with respect to the feature image stored in the relative position storage means; Features.

  According to an eleventh aspect of the present invention, the computer program according to the ninth or tenth aspect causes the image measuring device to function as a display position changing unit that accepts a change in a position for displaying the dimension line and / or the measurement result. It is characterized by.

  A computer program according to a twelfth aspect of the present invention is the computer program product according to any one of the ninth to eleventh aspects, wherein the measurement result is a target for determining whether or not the image measuring device is within a predetermined tolerance range. It is characterized by functioning as a measurement result designation accepting unit for accepting designation, and a display mode changing unit for changing the display mode of the measurement result accepted by the measurement result designation accepting unit.

  A computer program according to a thirteenth invention is the measurement according to the twelfth invention, wherein the image measuring device determines whether or not the measurement result received by the measurement result designation receiving means is within a predetermined tolerance range. It is made to function as a result determination means, and when the measurement result determination means determines that the display result changing means is within a predetermined tolerance range, it functions as a means for changing the display form of the measurement result. To do.

  A computer program according to a fourteenth aspect of the present invention is the computer program product according to any one of the ninth to thirteenth aspects, wherein the image measurement device includes a portion where the measurement result is displayed outside a display range. When the measurement result display unit determines that there is a portion displayed outside the display range by the display state determination unit, the display position of the measurement result is displayed in the display range. It is made to function as a means to move and display inside.

  According to a fifteenth aspect of the present invention, in any one of the ninth to fourteenth aspects, the computer program according to the fifteenth aspect of the present invention detects the image measurement device, a display angle detection unit that detects a tilt angle of the display position of the measurement result, and When the inclination angle determination means determines that the inclination angle is greater than or equal to a predetermined angle, the measurement result display means determines that the inclination angle is equal to or greater than the predetermined angle. It is characterized by functioning as means for displaying the result upside down.

  According to a sixteenth aspect of the present invention, the computer program according to the sixteenth aspect of the invention relates to the image measurement apparatus, wherein the information about the relative position of the measurement object to the image represents the dimension line indicating the displayed measurement position and the display position of the measurement result. As a measurement result display position storage unit that stores the measurement result in association with the posture and position of the image of the measurement object, and the measurement result display unit stores the dimension line and the measurement result stored in the measurement result display position storage unit. Based on the information on the relative position of the measurement object relative to the image representing the display position of the measurement object, the information on the posture and position of the image of the measurement object specified by the attitude / position specifying means is changed and displayed. It is characterized by that.

  In the first invention and the ninth invention, an image of the measurement object acquired by the imaging means is displayed, an arbitrary partial image on the displayed image is accepted as a feature image, and a measurement position of the measurement object is designated. Accept. The feature image that has received the designation and information related to the relative position with respect to the feature image that represents the measurement position and the display position for displaying the dimension line indicating the measurement position are stored. The image of the measurement object newly acquired by the imaging unit is collated with the stored feature image, and information regarding the posture and position of the image of the measurement object newly acquired is specified. Based on the information on the relative position of the measurement position with respect to the stored feature image, the measurement position is set for the image of the measurement object whose posture and position are specified, the edge portion of the measurement position is detected, and the predetermined position is detected. Measure the physical quantity. Based on the information related to the relative position with respect to the feature image, which represents the stored display position of the dimension line, the dimension line indicating the measurement position and the measurement result are displayed at a predetermined position. By storing the specified feature image and the display position for displaying the measurement position and the dimension line indicating the measurement position as information on the relative position to the feature image, the image of the measurement object and the feature image are collated. Then, the orientation and position of the image of the measurement object, and the display position for displaying the measurement position and the dimension line indicating the measurement position can be determined as a relative position with respect to the image of the measurement object. Therefore, the user can visually confirm which part of the measurement object the measurement result is, regardless of the orientation and position of the image of the measurement object.

  In the second and tenth inventions, the display position for displaying the measurement result is also stored as information related to the relative position with respect to the feature image, and based on the information about the relative position of the display position for displaying the measurement result with respect to the stored feature image. The measurement result is displayed at a predetermined position. As a result, the display of the measurement result is not affected by the orientation or position of the image of the measurement object, and the display position can be changed according to the image of the measurement object. The user can visually confirm which part is the measurement result.

  In the third invention and the eleventh invention, even if the position for displaying the dimension line and / or the measurement result is out of the field of view by receiving the change of the position for displaying the dimension line and / or the measurement result, The display position can be changed so as to be within the range, and the user can visually confirm which part of the measurement target the measurement result is.

  In the fourth invention and the twelfth invention, the measurement result is received by receiving the designation of the measurement result to be determined whether or not it is within the predetermined tolerance range, and changing the display mode of the measurement result in which the designation is accepted. It is possible to easily confirm the measurement result to be determined whether or not it is within the tolerance range based on the difference in display mode. Therefore, it is possible to visually confirm a measurement result that requires accuracy so as to be within the tolerance range.

  In the fifth invention and the thirteenth invention, it is determined whether or not the measurement result having received the designation is within a predetermined tolerance range, and when it is determined that the measurement result is within the predetermined tolerance range, the display form of the measurement result is changed. By doing so, it can be easily confirmed by the display mode of the measurement result whether or not the measurement result is within a certain range considered appropriate. Therefore, it is possible to visually check the measurement result that is appropriate and the measurement result that is not appropriate, and it is easy to check which part of the measurement object is not appropriate, so re-measurement is easy. It becomes.

  In the sixth invention and the fourteenth invention, when there is a portion where the measurement result is displayed outside the display range, the measurement result is displayed by moving the display position of the measurement result into the display range and displaying it. It is possible to confirm visually with certainty.

  In the seventh invention and the fifteenth invention, the inclination angle of the display position of the measurement result is detected, and when the detected inclination angle is equal to or larger than the predetermined angle, the measurement result is displayed upside down to display which measurement object. Even when it is placed on the stage at such an angle, the measurement result can be displayed so that it can be easily confirmed visually.

  In the eighth invention and the sixteenth invention, the dimension line indicating the displayed measurement position and the display position of the measurement result indicating the relative position with respect to the image of the measurement object correspond to the posture and position of the image of the measurement object. The information on the orientation and position of the specified measurement object image is changed based on the information on the relative position of the measurement object image representing the stored dimension line and the measurement result display position. Even if the measurement object is placed on the stage at any angle, the display position is adjusted based on the stored dimension line and information on the position of the measurement result. It can be rotated and displayed.

  According to the above configuration, the image of the measurement object is stored by storing the feature image that has received the designation and the display position for displaying the measurement position and the dimension line indicating the measurement position as information on the relative position with respect to the feature image. Can be determined as a relative position with respect to the image of the measurement object by comparing the posture and position of the image of the measurement object and the display position for displaying the measurement position and the dimension line indicating the measurement position. Therefore, the user can visually confirm which part of the measurement object the measurement result is, regardless of the orientation and position of the image of the measurement object.

It is a perspective view which shows the main-body part of the image measuring device which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the structure of the image measuring device which concerns on Embodiment 1 of this invention. It is a block diagram which shows the structure of the control unit of the image measuring device which concerns on Embodiment 1 of this invention. It is a functional block diagram which shows the function of the control unit of the image measuring device which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the characteristic image storage process of CPU of the control unit of the image measuring device which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the relationship between the image of a measurement target object, a visual field range, and the display position of a measurement result. It is a schematic diagram which shows the reception method of designation | designated of a feature image and a measurement position. It is a flowchart which shows the procedure of the image measurement process of CPU of the control unit of the image measuring device which concerns on Embodiment 1 of this invention. It is an illustration figure of the matching process with the feature image and the image of a measurement object. It is a schematic diagram which shows the display method of a measurement position and a dimension line. It is a schematic diagram explaining the method to change the dimension line and / or display position of a measurement result when a measurement result protrudes out of a display range. It is a schematic diagram explaining the method to change the display position in the case of displaying a measurement result upside down. It is a block diagram which shows the structure of the control unit of the image measuring device which concerns on Embodiment 2 of this invention. It is a functional block diagram which shows the function of the control unit of the image measuring device which concerns on Embodiment 2 of this invention. It is a flowchart which shows the procedure of the image measurement process of CPU of the control unit of the image measurement apparatus which concerns on Embodiment 2 of this invention. It is a schematic diagram which shows the display method of a dimension line and a measurement result. It is an illustration figure of the edge detection area designated on the conventional image. It is an illustration figure of the shape specified by the least squares method based on the conventional edge point. It is a schematic diagram for demonstrating the circle | round | yen obtained by fitting the conventional edge point to a geometric figure.

  Hereinafter, an image measuring device according to an embodiment of the present invention will be specifically described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a perspective view showing a main body portion 2 of an image measuring apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a schematic diagram showing a configuration of the image measuring apparatus 1 according to Embodiment 1 of the present invention. It is. As shown in FIG. 2, the image measuring apparatus 1 according to the first embodiment includes a main body portion 2 and a control unit 3, and the control unit 3 calculates image data captured by the main body portion 2. Process and measure the dimensions of the desired shape.

  As shown in FIG. 1, the main body portion 2 includes a stage 21 having a mounting portion 211 that transmits light in the vicinity of the central portion, and the main body portion 2 can be rotated around the mounting portion 211. Are connected to each other via a support portion 212. By placing the measurement object 20 on the placement unit 211 and accepting designation of a desired operation on the operation panel 29, the measurement object 20 is placed by the imaging unit 30 disposed above the arm unit 28. The image is taken and the measurement result is displayed on the display device 27.

  As shown in FIG. 2, in the main body portion 2, two sets of illumination devices 22 and 24 are installed with a stage 21 for moving the placed measurement object 20 interposed therebetween. First, a ring-shaped epi-illumination device 22 that illuminates the measurement object 20 on the stage 21 from above is installed in the light receiving lens unit 23. The light irradiated by the epi-illumination device 22 is reflected by the surface of the measurement object 20 and returns to the light receiving lens unit 23. Thereby, the unevenness | corrugation of the surface of the measurement target object 20, a pattern, etc. can be imaged.

  A transmission illumination device 24 that illuminates the measurement target 20 from below is installed below the stage 21. The transmitted illumination device 24 includes at least a light source 241, a reflection mechanism 242, and a lens 243. The light emitted from the light source 241 is reflected by the reflection mechanism 242 toward the stage 21, and the lens 243 reflects the stage 21. To be converted into parallel light in a direction substantially perpendicular to each other. Thereby, only the light of the position where the measuring object 20 does not exist can be transmitted and imaged.

  The light receiving lens unit 23 includes at least a light receiving lens 231, a beam splitter 232, a high magnification side imaging lens unit 233, and a low magnification side imaging lens unit 236. The high-magnification side imaging lens unit 233 includes a slit 234 for imaging and a high-magnification side imaging lens 235, and the low-magnification side imaging lens unit 236 includes a slit 237 for imaging and a low-magnification side imaging. A lens 238 is used. The beam splitter 232 is a prism that branches light from the light receiving lens 231 in two directions. For example, a cube type or a plate type can be used. Compared with the plate type, the cube type beam splitter is preferable because the light passing through the beam splitter is not refracted, the optical axis is not shifted, and alignment adjustment of the branch angle is easy.

  In FIG. 2, the light irradiated from the epi-illumination device 22 is reflected by the measurement object 20 and the light emitted from the transmission illumination device 24 and transmitted through the measurement object 20 is divided into the high-magnification imaging lens unit 233 and the low-light imaging lens unit 233. An example of guiding to the magnification side imaging lens unit 236 is shown. The light in two directions branched by the beam splitter 232 is guided to both the low magnification side imaging lens unit 236 and the high magnification side imaging lens unit 233.

  The high-magnification side imaging device 25 forms an image of light guided to the high-magnification side imaging lens unit 233 with an imaging element 251 such as a CCD or CMOS, and transmits the image to the control unit 3 as high-magnification image data. Similarly, the low-magnification side imaging device 26 causes the light guided to the low-magnification side imaging lens unit 236 to be imaged by an imaging element 261 such as a CCD or CMOS, and transmits the image to the control unit 3 as low-magnification image data. With the above-described configuration of the two-branch optical system including the light receiving lens 231 and the beam splitter 232, high-magnification image data and low-magnification image data can be acquired simultaneously without mechanically switching the optical system. Both image data can be electronically switched and displayed on one screen, or can be displayed separately on two screens simultaneously.

  FIG. 3 is a block diagram showing the configuration of the control unit 3 of the image measurement apparatus 1 according to Embodiment 1 of the present invention. As shown in FIG. 3, the control unit 3 of the image measuring apparatus 1 according to the first embodiment includes at least a CPU (central processing unit) 33, a RAM 34, a storage device 35 such as a disk, a communication device 36, and the hardware described above. The internal bus 37 is connected. The internal bus 37 is also connected to a mouse 32, a keyboard 31, which is an input device, and a display device 27, which is an output device.

  The CPU 33 is connected to the above-described hardware units of the control unit 3 via the internal bus 37, controls the operation of the above-described hardware units, and according to a computer program stored in the storage device 35, Perform various software functions. The RAM 34 is composed of, for example, a volatile memory such as SRAM or SDRAM, and a load module is developed when the computer program is executed, and stores temporary data generated when the computer program is executed.

  Both image data captured by the high-magnification side imaging device 25 and the low-magnification side imaging device 26 are stored in the storage device 35 with the high-magnification image data and the low-magnification image data aligned with each other. Here, the low-magnification image and the high-magnification image are obtained by dividing the light from the same light-receiving lens 231 in two directions by the beam splitter 232 into light in one direction, respectively. Since it is obtained by forming an image on the image pickup elements 251 and 261 through the image lens 238, the image is taken coaxially. That is, the image is captured so that the center of the field of view of the low-magnification image matches the center of the field of view of the high-magnification image.

  The storage device 35 also includes a feature image storage unit 351 and a relative position storage unit 352. The feature image storage unit 351 stores feature image data indicating features for each measurement object 20. By performing the matching process between the stored feature image data and the acquired image data, it is possible to grasp what posture and position the measurement object 20 is placed on the stage 21. The relative position storage unit 352 stores the information regarding the relative position with respect to the feature image, which represents the measurement position at which the designation is received and the display position of the dimension line indicating the measurement position. Based on the stored information on the relative position, the relative position for displaying the measurement position and the dimension line is determined when the posture and position of the image of the measurement target 20 are specified. Of course, the feature image storage unit 351 and the relative position storage unit 352 may be integrated and stored.

  The communication device 36 is connected to the internal bus 37, is connected to the high-magnification side imaging device 25 and the low-magnification side imaging device 26 via a communication line, and is imaged by the high-magnification side imaging device 25 and the low-magnification side imaging device 26. Receive image data. Further, by being connected to an external network such as the Internet, a LAN, or a WAN, data can be transmitted / received to / from an external computer or the like. The computer program stored in the storage device 35 is downloaded from an external computer via the communication device 36.

  FIG. 4 is a functional block diagram showing functions of the control unit 3 of the image measuring apparatus 1 according to Embodiment 1 of the present invention. In FIG. 4, the image data acquisition unit 331 is a low-magnification image data of a low-magnification image captured by the low-magnification side imaging device 26, and a high-magnification image of a high-magnification image captured by the high-magnification side imaging device 25 coaxially with the low-magnification image Get image data. The acquired both image data are stored in the storage device 35.

  The display unit 332 displays the acquired low-magnification image data or high-magnification image data on the display device 27, and the feature image designation receiving unit 333 performs a feature on the image of the measurement target 20 displayed on the display device 27. An area designation of a partial image that is considered to be an image showing a specific part is accepted. The method for accepting the designation of the area is not particularly limited. For example, by the drag operation of the mouse 32 or the like, the designation of the rectangular area including the partial image that is considered to be an image showing the characteristic part is accepted, and the rectangle that has received the designation. The partial image included in the region is stored in the feature image storage unit 351 of the storage device 35 as a feature image of the measurement target 20.

  The measurement position designation accepting unit 334 accepts designation of the measurement position for the image of the measurement target 20 displayed on the display device 27. The method for accepting the designation of the measurement position is not particularly limited. For example, the designation of the area near the edge portion is accepted by a drag operation of the mouse 32 or the like. In addition, you may provide the tolerance designation | designated reception part 346 which receives designation | designated of the appropriate range of tolerance. The method for accepting designation of the appropriate range of tolerance is not particularly limited. For example, designation may be accepted from the setting screen by pressing the keyboard 31 or the like.

  The posture / position specifying unit 335 performs matching processing (collation) between the acquired image data of the measurement target 20 and the feature image stored in the feature image storage unit 351, and the posture and position of the image of the measurement target 20 Identify information about. The edge part detection unit 336 sets the measurement position for the image of the measurement object 20 whose posture and position are specified based on the information about the relative position of the measurement position with respect to the feature image stored in the relative position storage unit 352. Then, the edge part of the set measurement position is detected, and the measurement unit 337 calculates a predetermined physical quantity based on the information on the posture and position of the image of the specified measurement object 20 and the detected edge part. measure.

  The measurement result display unit 338 displays the measurement line and the measurement result indicating the measurement position and the measurement result based on the information on the relative position with respect to the feature image, which represents the display position of the measurement position and the dimension line stored in the relative position storage unit 352. Display in position. The relative position storage unit 352 also stores information on the relative position for displaying the measurement result with respect to the image of the measurement target 20, and the posture of the image of the measurement target 20 specified by the posture / position specifying unit 335. The measurement result may be displayed at a predetermined position on the basis of the information on the relative position where the measurement result with respect to the image of the measurement object 20 is displayed. Thereby, the display position of the measurement result can be changed according to the posture and position of the image of the measurement object 20.

  The display position changing unit 339 receives a change in the position where the dimension line and / or the measurement result is displayed. The method for accepting the change of the display position is not particularly limited, and is accepted, for example, by a drag operation of the mouse 32 or the like.

  Further, the measurement result designation receiving unit 340 receives designation of a measurement result that is a target for determining whether or not the measurement result is within a predetermined tolerance range. The method for accepting the designation of the measurement result is not particularly limited. For example, the designation of the display position of the measurement result may be accepted by clicking the mouse 32 or the like, or the measurement position for measuring the measurement result may be designated. It may be accepted.

  The measurement result determination unit 341 determines whether or not the measurement result that has received the designation is within a predetermined tolerance range. The display mode changing unit 342 changes the display mode of the measurement result received by the measurement result designation receiving unit 340 and the measurement result determined by the measurement result determining unit 341 to be within the tolerance range. For example, the user can visually check the measurement result determined to be within the tolerance range by changing the display mode such as changing the display color or highlighting.

  The display state determination unit 343 determines whether there is a portion where the measurement result is displayed outside the display range. When the display state determination unit 343 determines that there is a portion where the measurement result is displayed outside the display range, the measurement result display unit 338 moves and displays the display position of the measurement result within the display range. Thereby, a user can confirm a measurement result visually.

  The display angle detection unit 344 detects the tilt angle of the display position of the measurement result, and the tilt angle determination unit 345 determines whether the tilt angle detected by the display angle detection unit 344 is equal to or greater than a predetermined angle. The measurement result display unit 338 displays the measurement result upside down when the tilt angle determination unit 345 determines that the tilt angle is equal to or greater than a predetermined angle.

  FIG. 5 is a flowchart showing the procedure of the feature image storage process of the CPU 33 of the control unit 3 of the image measuring apparatus 1 according to the first embodiment of the present invention. The CPU 33 of the control unit 3 acquires low-magnification image data of a low-magnification image captured by the low-magnification side imaging device 26 and high-magnification image data of a high-magnification image that is coaxial with the low-magnification image and captured by the high-magnification side imaging device 25. (Step S501). The acquired both image data are stored in the storage device 35.

  The CPU 33 determines whether or not the high-magnification image data can be displayed within the visual field range (step S502), and the CPU 33 can display the high-magnification image data within the visual field range. When the determination is made (step S502: YES), the CPU 33 displays the high-magnification image data on the display device 27 (step S503), and the CPU 33 determines that the high-magnification image data cannot be displayed within the visual field range. If so (step S502: NO), the CPU 33 displays the low-magnification image data on the display device 27 (step S504).

  FIG. 6 is a schematic diagram showing the relationship between the image of the measurement object 20 and the visual field range and the display position of the measurement result. When an image (image data) of the measurement object 20 is acquired as shown in FIG. 6A, when the visual field range 61 is narrower than the image data of the measurement object 20 as shown in FIG. For example, when high-magnification image data is displayed, it is unclear which part of the measurement object 20 is displayed. Therefore, when the visual field range 61 is sufficiently wide with respect to the image data of the measurement target 20, for example, when displaying low-magnification image data, the entire image of the measurement target 20 as shown in FIG. Falls within the visual field range 61.

  And as shown in FIG.6 (c), by specifying the measurement area | region 62 by drag | drug operation etc. of the mouse | mouth 32 etc. with respect to the measurement target object 20 with which the whole image is displayed in the visual field range 61, The measurement area 62 can be designated while viewing the entire image of the measurement object 20. Therefore, the user can specify which part is being measured while visually confirming, and can prevent an erroneous part from being measured in advance.

  Returning to FIG. 5, the CPU 33 of the control unit 3 accepts designation of a rectangular area including a feature image that is considered to be an image showing a characteristic portion on the displayed low-magnification image or high-magnification image (step S505). ). The method for accepting designation of the rectangular area including the feature image is not particularly limited. For example, the designation of the rectangular area including the feature image is accepted by a drag operation of the mouse 32 or the like, and the rectangular area including the feature image is included in the received rectangular area. The stored partial image may be stored in the feature image storage unit 351 of the storage device 35 as a feature image of the measurement target 20.

  The CPU 33 accepts designation of the measurement position on the displayed low-magnification image or high-magnification image (step S506). The method for accepting the designation of the measurement position is not particularly limited. For example, the designation of the area near the edge portion is accepted by a drag operation of the mouse 32 or the like. In step S506, designation of an appropriate tolerance range may be accepted. The method for accepting designation of the appropriate range of tolerance is not particularly limited. For example, designation may be accepted from the setting screen by pressing the keyboard 31 or the like. In addition, in a state where the measurement result is displayed, designation of a measurement position may be received by a click operation of the mouse 32 or the like, and designation of an appropriate range of tolerance may be accepted for each measurement position for which designation has been received.

  The CPU 33 displays the feature image that has received the designation, the measurement position that has received the designation, and the information about the relative position with respect to the feature image that represents the display position of the dimension line indicating the measurement position, respectively. It memorize | stores in the memory | storage part 352 (step S507).

  FIG. 7 is a schematic diagram illustrating a method for accepting designation of feature images and measurement positions. 7A is an exemplary diagram showing a method for accepting designation of a rectangular area 71 including a feature image and measurement positions 72, 72,..., And FIG. 7C is an exemplary view of the feature image stored in the unit 351. FIG. 7C shows measurement positions 72, 72,..., Dimension lines 73, 73,. ,... Is an exemplary diagram of information relating to the relative position stored in the relative position storage unit 352 upon receiving designation of the display position.

  As shown in FIG. 7A, the feature image as shown in FIG. 7B is first cut out by receiving designation of the rectangular area 71 and stored in the feature image storage unit 351. The feature image storage unit 351 stores not only the image data of the feature image but also the coordinates of the relative position of the rectangular area 71 with respect to the image of the measurement target 20, the rotation angle, and the like.

  Next, by receiving designation of the measurement positions 72, 72,... As shown in FIG. 7A, as shown in FIG. 7C, dimension lines 73, 73 indicating the measurement positions and measurement positions. ,... Are stored in the relative position storage unit 352, which represents the display positions of the feature images. In the relative position storage unit 352, not only information on these relative positions, but also relative to the image of the measurement object 20 representing the display positions of the measurement positions 72, 72,..., Dimension lines 73, 73,. The coordinates of the position, the rotation angle, etc. are also stored. Note that the measurement result display positions 74, 74,... For displaying the measurement results may be stored in the relative position storage unit 352 in the same manner as other elements as shown in FIG.

  FIG. 8 is a flowchart showing the procedure of the image measurement process of the CPU 33 of the control unit 3 of the image measurement apparatus 1 according to the first embodiment of the present invention. The CPU 33 of the control unit 3 newly generates a low-magnification image data of a low-magnification image picked up by the low-magnification side imaging device 26 and a high-magnification image data of a high-magnification image that is coaxial with the low-magnification image and picked up by the high-magnification side imaging device 25. Is acquired (step S801). The acquired both image data are stored in the storage device 35.

  The CPU 33 determines whether or not the high-magnification image data can be displayed within the visual field range (step S802), and the CPU 33 can display the high-magnification image data within the visual field range. If it is determined (step S802: YES), the CPU 33 displays the high-magnification image data on the display device 27 (step S803), and the CPU 33 determines that the high-magnification image data cannot be displayed within the visual field range. If so (step S802: NO), the CPU 33 displays the low-magnification image data on the display device 27 (step S804).

  The CPU 33 performs matching processing (collation) between the newly acquired image data and the feature image stored in the feature image storage unit 351 (step S805), and specifies information regarding the posture and position of the image of the measurement target 20. (Step S806). The CPU 33 sets and sets the measurement position for the image of the measurement object 20 whose posture and position are specified based on the information on the relative position of the measurement position relative to the feature image stored in the relative position storage unit 352. The edge portion of the measured position is detected (step S807).

  FIG. 9 is an exemplary diagram of a matching process between the feature image and the image of the measurement target 20. FIG. 9A is an exemplary diagram of newly acquired image data, and FIG. 9B is an exemplary diagram of a feature image stored in the feature image storage unit 351.

  As shown in FIG. 9A, when image data of the measurement object 20 is newly acquired, a search is performed from the acquired image data for a partial image that matches the feature image 91 shown in FIG. 9B. When a partial image that matches the feature image 91 is searched, a rectangular area 71 for the partial image is specified. The feature image storage unit 351 also stores the coordinates of the relative position of the rectangular area 71 with respect to the image of the measurement target 20, the relative rotation angle, and the like. The relative position storage unit 352 stores the measurement positions 72, 72, ..., the coordinates of the relative position with respect to the image of the measurement object 20, the rotation angle, etc., representing the display positions of the dimension lines 73, 73, ... are also stored, so that the rectangular area 71 is specified. It is possible to accurately identify which part of the measurement object 20 is the measurement position, and it is possible to detect a desired edge part.

  Returning to FIG. 8, the CPU 33 of the control unit 3 measures a predetermined physical quantity based on the detected edge portion (step S808). The predetermined physical quantity to be measured is a length, a diameter, an angle or the like. The CPU 33 displays the dimension line indicating the measurement position and the measurement result at a predetermined position based on the information regarding the relative position with respect to the feature image, which represents the display position of the dimension line stored in the relative position storage unit 352 (step S809). ).

  FIG. 10 is a schematic diagram showing a display method of measurement positions and dimension lines. As shown in FIG. 10 (a), the predetermined physical quantities measured at the measurement positions 62, 62,..., For example, the length, diameter, angle, etc. are the orientation and position of the image of the specified measurement object 20. , And the relative position display unit 352 displays the dimension lines 63, 63,... With respect to the feature image, and displays the measurement result 64 at a predetermined position.

  In addition, since the display position of the measurement position 62 and the dimension line 63 is stored as a relative position with respect to the feature image, for example, as illustrated in FIG. Even when placed above, the display position of the measurement position 62 and the dimension line 63 is moved and rotated in accordance with the specified posture and position of the measurement object 20, as shown in FIG. Thus, the measurement result 64 can be displayed at an easily viewable position. Therefore, even when the user appropriately places the measurement object 20 on the stage 21, the measurement position 62 and the dimension line 63 are moved and rotated in accordance with the posture and position of the image of the measurement object 20. The measurement result 64 measured at the stored measurement position 62 can be displayed at a position that is easy to see.

  The relative position storage unit 352 also stores information related to the relative position at which the measurement result 64 for the feature image is displayed, and the CPU 33 of the control unit 3 determines the orientation and position of the image of the specified measurement object 20, and The measurement result 64 may be displayed at a predetermined position based on information on the relative position where the measurement result 64 for the feature image is displayed. Thereby, the display position of the measurement result 64 can be changed according to the orientation and position of the image of the measurement object 20.

  Thus, when the display positions of the dimension line 63 and the measurement result 64 are automatically specified, the measurement result 64 may protrude out of the display range depending on the placement method of the measurement target 20. When it protrudes outside the display range, the user cannot know the measurement result 64 and cannot confirm it visually.

  Therefore, in the first embodiment, the dimension line 63 and / or the measurement result 64 is moved and displayed within the display range by receiving a change in the position where the dimension line 63 and / or the measurement result 64 is displayed. The user can check visually. Of course, when the CPU 33 determines whether or not there is a portion where the measurement result 64 is displayed outside the display range, and the CPU 33 determines that there is a portion displayed outside the display range, the CPU 33 performs measurement. The display position of the result 64 may be moved and displayed within the display range. FIG. 11 is a schematic diagram illustrating a method of changing the display position of the dimension line 63 and / or the measurement result 64 when the measurement result 64 protrudes outside the display range.

  When the measurement object 20 is placed so as to be positioned above the display screen as shown in FIG. 11A, the dimension line 63 and the measurement result 64 indicating the length of the upper side of the measurement object 20 are: It is displayed in a region 81 outside the visual field range 61 and cannot be confirmed visually by the user. Therefore, the CPU 33 determines whether or not there is an area 81 for displaying the dimension line 63 and the measurement result 64 outside the visual field range 61. If it is determined that the area 81 is present, as shown in FIG. Then, the height of the dimension line 63 is decreased, and the display position is changed so that the measurement result 64 falls within the visual field range 61. Of course, the user may explicitly move by dragging the mouse 32 or the like.

  Further, depending on the placement method of the measurement object 20 on the stage 21, the measurement result 64 may be displayed upside down, and the measurement value displayed as the measurement result 64 may be difficult to read. Therefore, in the first embodiment, the inclination angle of the display position of the measurement result 64 is detected, and when the detected inclination angle is equal to or larger than the predetermined angle, the measurement result 64 is displayed upside down and used. The measurement result 64 can be displayed as a measurement value that is always easy for a person to confirm. FIG. 12 is a schematic diagram for explaining a method of changing the display position when displaying the measurement result 64 upside down.

  As shown in FIG. 12A, for example, when the image of the measurement object 20 is rotated 90 degrees or more clockwise or counterclockwise toward the screen with respect to the stored characteristic image of the measurement object 20, Since the numerical value of the measurement result 64 is displayed upside down, the display mode is difficult for the user to confirm. Therefore, when the CPU 33 determines that the image of the measurement target 20 is rotated 90 degrees or more clockwise or counterclockwise toward the screen, the measurement result 64 is moved up and down as shown in FIG. By inverting and displaying, the user can easily confirm the measurement result 64 visually.

  Of course, the measurement result 64 is not limited to being displayed upside down, and it is only necessary to display the measurement result 64 in a display mode that is easy for the user to confirm. For example, as shown in FIG. 12C, the measurement result 64 may be displayed in an aligned manner in the horizontal direction of the screen instead of being inverted upside down.

  Furthermore, the measurement result 64 may be displayed by rotating the image of the measurement object 20 itself. That is, as shown in FIG. 12D, the relative positional relationship is stored by integrating the image of the measurement object 20, the dimension line 63, and the measurement result 64, and the CPU 33 stores the measurement image stored in the image of the measurement object 20. If it is determined that the feature image of the object 20 is rotated 90 degrees or more clockwise or counterclockwise toward the screen, the image and dimensions of the measurement object 20 to the same direction as the stored feature image By rotating the line 63 and the measurement result 64 as a unit, the measurement result 64 can be displayed in a display mode that is easier to confirm.

  In addition, the CPU 33 may determine whether or not the measurement result 64 is within the tolerance range, and the display form of the measurement result 64 may be changed for the measurement result 64 that the CPU 33 has determined to be within the tolerance range. . For example, by changing the display mode such as changing the display color or highlighting, the user can visually confirm the measurement result 64 that is not within the tolerance range. Needless to say, the display mode of the measurement result 64 may be changed with respect to the measurement result 64 that is a target for determining whether or not it is within the tolerance range.

  As described above, according to the first embodiment, it is stored as information about the relative position with respect to the feature image that represents the feature image that has received the designation, the measurement position, and the display position of the dimension line indicating the measurement position. Thus, the image of the measurement object 20 and the feature image are matched, and the posture and position of the image of the measurement object 20 and the measurement positions 62, 62,... And the measurement positions 62, 62,. Can be determined as relative positions with respect to the image of the measuring object 20, which represent the display positions of the dimension lines 63, 63,. Therefore, the user visually confirms which part of the measurement object 20 the measurement results 64, 64,... Are the measurement values regardless of the orientation, position, etc. of the image of the measurement object 20. Can do.

(Embodiment 2)
Since the configuration of the image measuring apparatus 1 according to the second embodiment of the present invention is the same as that of the first embodiment, detailed description thereof is omitted by attaching the same reference numerals. In the second embodiment, information on the displayed dimension line indicating the measurement position and the display position of the measurement result is stored in association with the orientation and position of the image of the measurement object 20, and the measurement object 20 The difference from Embodiment 1 is that the image is displayed according to the displayed dimension line, measurement result, and measurement position that is the basis of measurement.

  FIG. 13 is a block diagram showing the configuration of the control unit 3 of the image measurement apparatus 1 according to Embodiment 2 of the present invention. As shown in FIG. 13, the hardware configuration of the control unit 3 of the image measurement device 1 according to the second embodiment is also the same as that of the first embodiment. Is omitted.

  The storage device 35 includes a measurement result display position storage unit 353 in addition to the feature image storage unit 351 and the relative position storage unit 352. The measurement result display position storage unit 353 stores information related to the relative position of the measurement target object 20 with respect to the image, which represents the orientation of the image of the measurement target object 20, the position, the measurement position, and the display position of the dimension line. Based on the stored information on the relative position, when the information on the posture and position of the image of the measurement target 20 is specified, the corresponding measurement position and the relative position for displaying the dimension line are determined. Of course, information regarding the relative position may be stored for the position where the measurement result is displayed.

  FIG. 14 is a functional block diagram showing functions of the control unit 3 of the image measurement apparatus 1 according to Embodiment 2 of the present invention. In FIG. 14, the image data acquisition unit 331 performs high-magnification of the low-magnification image data of the low-magnification image captured by the low-magnification side imaging device 26 and the high-magnification image that is coaxial with the low-magnification image and captured by the high-magnification side imaging device 25. Get image data. Both acquired image data are stored in the feature image storage unit 351 of the storage device 35.

  The display unit 332 displays the acquired low-magnification image data or high-magnification image data on the display device 27, and the feature image designation receiving unit 333 performs a feature on the image of the measurement target 20 displayed on the display device 27. An area designation of a partial image that is considered to be an image showing a specific part is accepted. The method for accepting the designation of the area is not particularly limited. For example, by the drag operation of the mouse 32 or the like, the designation of the rectangular area including the partial image that is considered to be an image showing the characteristic part is accepted, and the rectangle that has received the designation. The partial image included in the region is stored in the feature image storage unit 351 of the storage device 35 as a feature image of the measurement target 20.

  The measurement position designation accepting unit 334 accepts designation of the measurement position for the image of the measurement target 20 displayed on the display device 27. The method for accepting the designation of the measurement position is not particularly limited. For example, the designation of the area near the edge portion is accepted by a drag operation of the mouse 32 or the like. In addition, you may provide the tolerance designation | designated reception part 346 which receives designation | designated of the appropriate range of tolerance. The method for accepting designation of the appropriate range of tolerance is not particularly limited. For example, designation may be accepted from the setting screen by pressing the keyboard 31 or the like.

  The posture / position specifying unit 335 performs matching processing (collation) between the acquired image data of the measurement target 20 and the feature image stored in the feature image storage unit 351, and the posture and position of the image of the measurement target 20 Identify information about. The edge part detection unit 336 sets the measurement position for the image of the measurement object 20 whose posture and position are specified based on the information about the relative position of the measurement position with respect to the feature image stored in the relative position storage unit 352. Then, the edge part of the set measurement position is detected, and the measurement unit 337 calculates a predetermined physical quantity based on the information on the posture and position of the image of the specified measurement object 20 and the detected edge part. measure.

  The measurement result display unit 338 displays the measurement line and the measurement result indicating the measurement position and the measurement result based on the information on the relative position with respect to the feature image, which represents the display position of the measurement position and the dimension line stored in the relative position storage unit 352. Display in position. Then, the measurement result display position storage unit 353 stores information on the relative position with respect to the measurement object 20, which represents the display position of the dimension line and the measurement result, in association with the feature image of the measurement object 20 being displayed.

  FIG. 15 is a flowchart showing a procedure of image measurement processing of the CPU 33 of the control unit 3 of the image measurement apparatus 1 according to the second embodiment of the present invention. The CPU 33 of the control unit 3 displays the dimension line indicating the measurement position and the measurement result at a predetermined position based on the information regarding the relative position with respect to the feature image, which represents the display position of the dimension line stored in the relative position storage unit 352. (Step S809 in FIG. 8), the displayed dimension line, the measurement result, and the display position of the image of the measurement object 20 are related to the relative position to the image of the measurement object 20 that represents the measurement position and the display position of the dimension line. The information is stored in the measurement result display position storage unit 353 as information (step S1501).

  The CPU 33 acquires low-magnification image data of a low-magnification image newly captured by the low-magnification side imaging device 26 and high-magnification image data of a high-magnification image that is coaxial with the low-magnification image and captured by the high-magnification imaging device 25 ( Step S1502). Both acquired image data are stored in the feature image storage unit 351 of the storage device 35.

  The CPU 33 determines whether or not the high-magnification image data can be displayed within the visual field range (step S1503), and the CPU 33 can display the high-magnification image data within the visual field range. If it is determined (step S1503: YES), the CPU 33 displays the high-magnification image data on the display device 27 (step S1504), and the CPU 33 determines that the high-magnification image data cannot be displayed within the visual field range. If so (step S1503: NO), the CPU 33 displays the low-magnification image data on the display device 27 (step S1505).

  The CPU 33 performs matching processing (collation) between the newly acquired image data and the feature image stored in the feature image storage unit 351 (step S1506), and specifies information on the posture and position of the image of the measurement target 20. (Step S1507). The CPU 33 sets and sets the measurement position for the image of the measurement object 20 whose posture and position are specified based on the information on the relative position of the measurement position relative to the feature image stored in the relative position storage unit 352. The edge portion of the measured position is detected (step S1508).

  The CPU 33 measures a predetermined physical quantity based on the detected edge portion (step S1509). The predetermined physical quantity to be measured is a length, a diameter, an angle or the like. The CPU 33 represents the measurement position and the display position of the dimension line stored in the measurement result display position storage unit 353, and the dimension line indicating the measurement position, the measurement result, and the information on the relative position of the measurement target 20 with respect to the image. An image of the measurement object 20 is displayed at a predetermined position (step S1510).

  FIG. 16 is a schematic diagram illustrating a method of displaying dimension lines and measurement results. As shown in FIG. 16A, the measured physical quantity, for example, the length, angle, diameter, etc., is stored in the orientation and position of the image of the measurement object 20 and the relative position storage unit 352. Based on the measurement position (measurement region) 62 with respect to the image of the object 20 and information on the relative position at which the dimension line 63 is displayed, the measurement result 64 is displayed at a predetermined position.

  Next, the displayed dimension line 63 and measurement position 62, preferably the display position 65 of the measurement result 64, are stored as relative positions with respect to the image of the measurement object 20. For example, as shown in FIG. 16B, the measurement target 20 is removed from FIG. 16A and the measurement result display position storage unit 353 stores the screen image excluding the display of the measurement result 64.

  And as shown in FIG.16 (c), when the measurement target object 20 is mounted on the stage 21 in arbitrary positions, the attitude | position and position of the measurement target object 20 are specified, and the corresponding feature image and The image itself of the measurement object 20 is moved and rotated in accordance with the dimension line 63 corresponding to the feature image and the measurement position 62, preferably the display position 65 of the measurement result 64, and displayed. That is, as shown in FIG. 16D, the image of the measurement object 20 is moved and rotated so that the image of the measurement object 20 is superimposed on the feature image, and the edge portion is automatically detected at the stored measurement position 62. Then, a predetermined physical quantity is automatically measured and displayed as a measurement result 64 at the display position 65.

  As described above, according to the second embodiment, the measurement position stored in the measurement result display position storage unit 353 and the measurement object 20 are placed on the stage 21 at any angle. The image of the measurement target 20 can be rotated based on the information on the relative position of the measurement target 20 with respect to the image representing the display position of the dimension line, and the measured measurement result can be displayed at a predetermined position. Further, with respect to the same measurement object 20, it is possible to automatically measure a necessary physical quantity without receiving a new measurement position designation.

  The present invention is not limited to Embodiments 1 and 2 described above, and it goes without saying that various modifications and replacements are possible within the scope of the present invention. For example, the image measuring apparatus 1 includes a main body portion 2 and an external computer. The image data obtained by capturing the image in the main body portion 2 is processed by an external computer to obtain a desired shape dimension and the like. May be measured. Needless to say, the control unit 3 may be built in the main body 2.

DESCRIPTION OF SYMBOLS 1 Image measuring device 2 Main body part 3 Control unit 20 Measurement object 21 Stage 25 High magnification side imaging device 26 Low magnification side imaging device 27 Display device 31 Keyboard 32 Mouse 33 CPU
34 RAM
35 storage device 36 communication device 37 internal bus 351 feature image storage unit 352 relative position storage unit 353 measurement result display position storage unit

Claims (9)

In the image measuring device in which an imaging means for acquiring an image of the measurement object is arranged opposite to the stage on which the measurement object is placed,
Display means for displaying an image of the measurement object acquired by the imaging means;
A feature image designation receiving stage for accepting designation as an arbitrary partial image on the displayed image as a feature image;
A measurement position designation accepting means for accepting designation of a measurement position of the measurement object on the displayed image;
Relative position with respect to the feature image that represents a feature image that has been designated by the feature image designation accepting means, a measurement position that has been designated by the measurement position designation accepting means, and a display position that displays a dimension line indicating the measurement position. Relative position storage means for storing information about,
A posture / position specifying means for collating the image of the measurement object newly acquired by the imaging means with the stored feature image and specifying information relating to the posture and position of the image of the newly acquired measurement object; ,
Based on the information on the relative position of the measurement position with respect to the feature image stored in the relative position storage means, the measurement position is set for the image of the measurement object whose posture and position are specified, and the edge portion of the measurement position Edge portion detecting means for detecting
A measuring means for measuring a predetermined physical quantity based on the detected edge portion;
Measurement result display means for displaying a dimension line indicating a measurement position and a measurement result at a predetermined position based on information on a relative position with respect to a feature image, which represents a display position of the dimension line stored in the relative position storage means. An image measuring device comprising: The relative position storage means includes
The display position for displaying the measurement result is also stored as information on the relative position with respect to the feature image,
The measurement result display means displays the measurement result at a predetermined position based on information on a relative position of a display position for displaying the measurement result with respect to the feature image stored in the relative position storage means. The image measuring device according to claim 1. The image measuring apparatus according to claim 1, further comprising a display position changing unit that receives a change in a position for displaying the dimension line and / or the measurement result. Measurement result designation accepting means for accepting designation of the measurement result as a target for determining whether or not it is within a predetermined tolerance range;
The image measurement apparatus according to claim 1, further comprising: a display mode changing unit that changes a display mode of the measurement result received by the measurement result specification receiving unit. A measurement result determination unit that determines whether the measurement result received by the measurement result specification reception unit is within a predetermined tolerance range;
5. The image according to claim 4, wherein the display mode changing unit changes the display mode of the measurement result when the measurement result determination unit determines that the measurement result is within a predetermined tolerance range. Measuring device. A display state determining means for determining whether or not there is a portion where the measurement result is displayed outside the display range;
The measurement result display means moves the display position of the measurement result into the display range and displays it when it is determined by the display state determination means that there is a portion displayed outside the display range. The image measurement device according to claim 1, wherein the image measurement device is a device. Display angle detection means for detecting the tilt angle of the display position of the measurement result;
An inclination angle determining means for determining whether or not the detected inclination angle is a predetermined angle or more,
7. The measurement result display means displays the measurement result upside down when the inclination angle determination means determines that the inclination angle is equal to or greater than a predetermined angle. The image measurement device according to any one of the above. Measurement result display position memory for storing information on the relative position of the measurement object image relative to the image of the measurement object, which represents the displayed measurement line and the display position of the measurement result, in association with the posture and position of the image of the measurement object With means,
The measurement result display means is the posture / position specifying means based on information on a relative position with respect to the image of the measurement object that represents the dimension line stored in the measurement result display position storage means and the display position of the measurement result. The image measurement apparatus according to claim 1, wherein information relating to the posture and position of the image of the specified measurement object is changed and displayed. In a computer program that can be executed by an image measurement apparatus in which an imaging unit that acquires an image of a measurement object is arranged opposite to a stage on which the measurement object is placed,
The image measuring device;
Display means for displaying an image of the measurement object acquired by the imaging means;
A feature image designation receiving stage for accepting designation as an arbitrary partial image on the displayed image as a feature image;
A measurement position designation accepting means for accepting designation of the measurement position of the measurement object on the displayed image;
Relative position with respect to the feature image that represents a feature image that has been designated by the feature image designation accepting means, a measurement position that has been designated by the measurement position designation accepting means, and a display position that displays a dimension line indicating the measurement position. Relative position storage means for storing information on,
A posture / position specifying means for collating the image of the measurement object newly acquired by the imaging means with the stored feature image and specifying information on the posture and position of the image of the measurement object newly acquired;
Based on the information on the relative position of the measurement position with respect to the feature image stored in the relative position storage means, the measurement position is set for the image of the measurement object whose posture and position are specified, and the edge portion of the measurement position Edge part detecting means for detecting,
A dimension indicating a measurement position based on information related to a relative position with respect to a feature image, which represents a display position of a dimension line stored in the relative position storage means, and a measurement unit that measures a predetermined physical quantity based on the detected edge portion A computer program which functions as a measurement result display means for displaying a line and a measurement result at a predetermined position.

Images